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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows guest local OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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Configuration 1
OR
*cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:*
Configuration 1
OR
*cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:*
Configuration 2
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
CVE Translated by NIST7/14/2016 6:45:01 PM
Action
Type
Old Value
New Value
Added
Translation
La función __switch_to en arch/x86/kernel/process_64.c en el kernel de Linux no sustituye correctamente el conmutador de contexto IOPL en invitados 64-bit PV Xen, lo que permite a usuarios locales del SO invitado obtener privilegios, provocar una denegación de servicio (caída del SO invitado), u obtener información sensible aprovechando el puerto de acceso I/O.
Removed
Translation
La función __switch_to en arch/x86/kernel/process_64.c en el kernel de Linux no sustituye correctamente el conmutador de contexto IOPL en invitados 64-bit PV Xen, lo que permite a usuarios del SO locales invitados obtener privilegios, provocar una denegación de servicio (caída de SO invitado) u obtener información sensible aprovechando el puerto de acceso I/O.
CVE Modified by MITRE7/13/2016 10:00:38 PM
Action
Type
Old Value
New Value
Changed
Description
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows guest local OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
Added
Reference
http://www.ubuntu.com/usn/USN-2996-1
Added
Reference
http://www.ubuntu.com/usn/USN-2997-1
Modified Analysis by NIST4/25/2016 8:40:40 AM
Action
Type
Old Value
New Value
Added
CPE Configuration
Configuration 1
OR
*cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:*
Added
CVSS V2
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Added
CVSS V3
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CWE
CWE-264
Changed
Reference Type
http://xenbits.xen.org/xsa/advisory-171.html No Types Assigned
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows guest local OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
Quick Info
CVE Dictionary Entry: CVE-2016-3157 NVD
Published Date: 04/12/2016 NVD
Last Modified: 12/02/2016
Source: MITRE
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